119c8f91e7
Setting nixosVersion to something custom is useful for meaningful GRUB menus and /nix/store paths, but actuallly changing it rebulids the whole system path (because of `nixos-version` script and manual pages). Also, changing it is not a particularly good idea because you can then be differentitated from other NixOS users by a lot of programs that read /etc/os-release. This patch introduces an alternative option that does all you want from nixosVersion, but rebuilds only the very top system level and /etc while using your label in the names of system /nix/store paths, GRUB and other boot loaders' menus, getty greetings and so on.
35 lines
801 B
Nix
35 lines
801 B
Nix
# This module contains the basic configuration for building a NixOS
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# installation CD.
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{ config, lib, pkgs, ... }:
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with lib;
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{
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imports =
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[ ./iso-image.nix
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# Profiles of this basic installation CD.
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../../profiles/all-hardware.nix
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../../profiles/base.nix
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../../profiles/installation-device.nix
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];
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# ISO naming.
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isoImage.isoName = "${config.isoImage.isoBaseName}-${config.system.nixosLabel}-${pkgs.stdenv.system}.iso";
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isoImage.volumeID = substring 0 11 "NIXOS_ISO";
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# EFI booting
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isoImage.makeEfiBootable = true;
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# USB booting
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isoImage.makeUsbBootable = true;
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# Add Memtest86+ to the CD.
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boot.loader.grub.memtest86.enable = true;
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# Allow the user to log in as root without a password.
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users.extraUsers.root.initialHashedPassword = "";
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}
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